Tire tread portion



FIG. 1 is a side perspective view of a tire tread portion showing our new design, it being understood that the tread portion is repeated throughout the circumference of the tire tread, the opposite side being the same as that shown;

FIG. 2 is a front elevational view thereof, the opposite side being identical thereto; and,

FIG. 3 is an enlarged front elevational view thereof.

The broken lines defining the sidewall, inner bead, and the tread pattern depict environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a tire tread portion, as shown and described. 